BATES, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY BATES, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Wrist bones. X-ray of the bones in a healthy wrist. At centre are the small carpal bones in the wrist. These articulate with the two bones of the forearm, the radius (lower right) and the ulna (lower left). Five metacarpal bones (top centre) make up the palm of the hand. Each finger (not seen) is made up of three phalanges, bones which articulate with the metacarpals. This skeleton of bones enables the human hand to be used with great flexibility, helped especially by the joint between the wrist and the thumb. It enables the wrist to be moved up and down, side to side, as well as to rotate in a circular motion.
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